Fixed some minor bugs and made broadcast settings reeditable

shared/js/connection/VideoConnection.ts

@@ -1,6 +1,5 @@
 import {VideoSource} from "tc-shared/video/VideoSource";
 import {Registry} from "tc-shared/events";
-import {ConnectionStatus} from "tc-shared/ui/frames/footer/StatusDefinitions";
 import {ConnectionStatistics} from "tc-shared/connection/ConnectionBase";
 
 export type VideoBroadcastType = "camera" | "screen";
@@ -78,6 +77,39 @@ export type LocalVideoBroadcastState = {
     state: "broadcasting"
 }
 
+export interface BroadcastConstraints {
+    /**
+     * Ideal and max video width
+     */
+    width: number,
+
+    /**
+     * Ideal and max video height
+     */
+    height: number,
+
+    /**
+     * Dynamically change the video quality related to bandwidth constraints.
+     */
+    dynamicQuality: boolean,
+
+    /**
+     * Max bandwidth which should be used (in bits/second)
+     */
+    maxBandwidth: number,
+
+    /**
+     * Maximal frame rate for the video.
+     * This might be ignored by some browsers.
+     */
+    maxFrameRate: number,
+
+    /**
+     * The maximal
+     */
+    dynamicFrameRate: boolean
+}
+
 export interface LocalVideoBroadcast {
     getEvents() : Registry<LocalVideoBroadcastEvents>;
 
@@ -90,13 +122,18 @@ export interface LocalVideoBroadcast {
 
     /**
      * @param source The source of the broadcast (No ownership will be taken. The voice connection must ref the source by itself!)
+     * @param constraints
      */
-    startBroadcasting(source: VideoSource) : Promise<void>;
+    startBroadcasting(source: VideoSource, constraints: BroadcastConstraints) : Promise<void>;
 
     /**
      * @param source The source of the broadcast (No ownership will be taken. The voice connection must ref the source by itself!)
+     * @param constraints
      */
-    changeSource(source: VideoSource) : Promise<void>;
+    changeSource(source: VideoSource, constraints: BroadcastConstraints) : Promise<void>;
+
+    getConstraints() : BroadcastConstraints | undefined;
+    applyConstraints(constraints: BroadcastConstraints) : Promise<void>;
 
     stopBroadcasting();
 }

shared/js/connection/rtc/Connection.ts

@@ -222,7 +222,7 @@ class CommandHandler extends AbstractCommandHandler {
                 }).then(() => this.handle["peer"].createAnswer())
                 .then(async answer => {
                     if(RTCConnection.kEnableSdpTrace) {
-                        const gr = logGroupNative(LogType.TRACE, LogCategory.WEBRTC, tra("Original local SDP ({})", data.mode as string));
+                        const gr = logGroupNative(LogType.TRACE, LogCategory.WEBRTC, tra("Original local SDP ({})", answer.type as string));
                         gr.collapsed(true);
                         gr.log("%s", answer.sdp);
                         gr.end();
@@ -235,7 +235,7 @@ class CommandHandler extends AbstractCommandHandler {
                 .then(answer => {
                     answer.sdp = SdpCompressor.compressSdp(answer.sdp, kSdpCompressionMode);
                     if(RTCConnection.kEnableSdpTrace) {
-                        const gr = logGroupNative(LogType.TRACE, LogCategory.WEBRTC, tra("Patched local SDP ({})", data.mode as string));
+                        const gr = logGroupNative(LogType.TRACE, LogCategory.WEBRTC, tra("Patched local SDP ({})", answer.type as string));
                         gr.collapsed(true);
                         gr.log("%s", answer.sdp);
                         gr.end();
@@ -810,7 +810,8 @@ export class RTCConnection {
             iceServers: [{ urls: ["stun:stun.l.google.com:19302", "stun:stun1.l.google.com:19302"] }]
         });
 
-        const kAddGenericTransceiver = false;
+        /* If set to false FF failed: FIXME! */
+        const kAddGenericTransceiver = true;
 
         if(this.audioSupport) {
             this.currentTransceiver["audio"] = this.peer.addTransceiver("audio");
@@ -880,6 +881,9 @@ export class RTCConnection {
             }
 
             await this.currentTransceiver[type].sender.replaceTrack(target);
+
+            /* Firefox has some crazy issues */
+            if(window.detectedBrowser.name !== "firefox") {
                 if(target) {
                     console.error("Setting sendrecv from %o", this.currentTransceiver[type].direction, this.currentTransceiver[type].currentDirection);
                     this.currentTransceiver[type].direction = "sendrecv";
@@ -894,6 +898,7 @@ export class RTCConnection {
                      */
                     //this.currentTransceiver[type].direction = "recvonly";
                 }
+            }
             logTrace(LogCategory.WEBRTC, "Replaced track for %o (Fallback: %o)", type, target === fallback);
         }
     }
@@ -1108,8 +1113,9 @@ export class RTCConnection {
                 logWarn(LogCategory.WEBRTC, tr("Received remote audio track %d but audio has been disabled. Dropping track."), ssrc);
                 return;
             }
+
             const track = new InternalRemoteRTPAudioTrack(ssrc, event.transceiver);
-            logDebug(LogCategory.WEBRTC, tr("Received remote audio track on ssrc %d"), ssrc);
+            logDebug(LogCategory.WEBRTC, tr("Received remote audio track on ssrc %o"), ssrc);
             if(tempInfo?.info !== undefined) {
                 track.handleAssignment(tempInfo.info);
                 this.events.fire("notify_audio_assignment_changed", {
@@ -1123,7 +1129,7 @@ export class RTCConnection {
             this.remoteAudioTracks[ssrc] = track;
         } else if(event.track.kind === "video") {
             const track = new InternalRemoteRTPVideoTrack(ssrc, event.transceiver);
-            logDebug(LogCategory.WEBRTC, tr("Received remote video track on ssrc %d"), ssrc);
+            logDebug(LogCategory.WEBRTC, tr("Received remote video track on ssrc %o"), ssrc);
             if(tempInfo?.info !== undefined) {
                 track.handleAssignment(tempInfo.info);
                 this.events.fire("notify_video_assignment_changed", {

shared/js/connection/rtc/video/Connection.ts

@@ -1,4 +1,5 @@
 import {
+    BroadcastConstraints,
     LocalVideoBroadcast,
     LocalVideoBroadcastEvents,
     LocalVideoBroadcastState,
@@ -27,6 +28,7 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
 
     private state: LocalVideoBroadcastState;
     private currentSource: VideoSource;
+    private currentConstrints: BroadcastConstraints;
     private broadcastStartId: number;
 
     private localStartPromise: Promise<void>;
@@ -70,22 +72,27 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
         return Promise.resolve(undefined);
     }
 
-    async changeSource(source: VideoSource): Promise<void> {
+    async changeSource(source: VideoSource, constraints: BroadcastConstraints): Promise<void> {
+        let sourceRef = source.ref();
+        try {
+            if(this.currentSource !== source) {
+                console.error("Source changed");
                 const videoTracks = source.getStream().getVideoTracks();
                 if(videoTracks.length === 0) {
                     throw tr("missing video stream track");
                 }
 
-        let sourceRef = source.ref();
                 while(this.localStartPromise) {
                     await this.localStartPromise;
                 }
 
                 if(this.state.state !== "broadcasting") {
-            sourceRef.deref();
                     throw tr("not broadcasting anything");
                 }
 
+                /* Apply the constraints to the current source */
+                await this.doApplyConstraints(constraints, source);
+
                 const startId = ++this.broadcastStartId;
                 let rtcBroadcastType: RTCBroadcastableTrackType = this.type === "camera" ? "video" : "video-screen";
                 try {
@@ -96,29 +103,35 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
                         return;
                     }
 
-            sourceRef.deref();
                     logError(LogCategory.WEBRTC, tr("Failed to change video track for broadcast %s: %o"), this.type, error);
                     throw tr("failed to change video track");
                 }
 
                 this.setCurrentSource(sourceRef);
+            } else if(!_.isEqual(this.currentConstrints, constraints)) {
+                console.error("Constraints changed");
+                await this.applyConstraints(constraints);
+            }
+        } finally {
             sourceRef.deref();
         }
+    }
 
     private setCurrentSource(source: VideoSource | undefined) {
         if(this.currentSource) {
             this.currentSource.deref();
+            this.currentConstrints = undefined;
         }
         this.currentSource = source?.ref();
     }
 
-    async startBroadcasting(source: VideoSource): Promise<void> {
+    async startBroadcasting(source: VideoSource, constraints: BroadcastConstraints): Promise<void> {
         const sourceRef = source.ref();
         while(this.localStartPromise) {
             await this.localStartPromise;
         }
 
-        const promise = this.doStartBroadcast(source);
+        const promise = this.doStartBroadcast(source, constraints);
         this.localStartPromise = promise.catch(() => {});
         this.localStartPromise.then(() => this.localStartPromise = undefined);
         try {
@@ -128,7 +141,7 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
         }
     }
 
-    private async doStartBroadcast(source: VideoSource) {
+    private async doStartBroadcast(source: VideoSource, constraints: BroadcastConstraints) {
         const videoTracks = source.getStream().getVideoTracks();
         if(videoTracks.length === 0) {
             throw tr("missing video stream track");
@@ -143,6 +156,23 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
             return;
         }
 
+        try {
+            await this.applyConstraints(constraints);
+        } catch (error) {
+            if(this.broadcastStartId !== startId) {
+                /* broadcast start has been canceled */
+                return;
+            }
+
+            logError(LogCategory.WEBRTC, tr("Failed to apply video constraints for broadcast %s: %o"), this.type, error);
+            this.stopBroadcasting(true, { state: "failed", reason: tr("Failed to apply video constraints") });
+            throw tr("Failed to apply video constraints");
+        }
+        if(this.broadcastStartId !== startId) {
+            /* broadcast start has been canceled */
+            return;
+        }
+
         let rtcBroadcastType: RTCBroadcastableTrackType = this.type === "camera" ? "video" : "video-screen";
 
         try {
@@ -183,6 +213,47 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
         this.setState({ state: "broadcasting" });
     }
 
+    async applyConstraints(constraints: BroadcastConstraints): Promise<void> {
+        await this.doApplyConstraints(constraints, this.currentSource);
+    }
+
+    private async doApplyConstraints(constraints: BroadcastConstraints, source: VideoSource): Promise<void> {
+        const capabilities = source.getCapabilities();
+        const videoConstraints: MediaTrackConstraints = {};
+
+        if(constraints.dynamicQuality && capabilities) {
+            videoConstraints.width = {
+                min: capabilities.minWidth,
+                max: constraints.width,
+                ideal: constraints.width
+            };
+
+            videoConstraints.height = {
+                min: capabilities.minHeight,
+                max: constraints.height,
+                ideal: constraints.height
+            };
+        } else {
+            videoConstraints.width = constraints.width;
+            videoConstraints.height = constraints.height;
+        }
+
+        if(constraints.dynamicFrameRate && capabilities) {
+            videoConstraints.frameRate = {
+                min: capabilities.minFrameRate,
+                max: constraints.maxFrameRate,
+                ideal: constraints.maxFrameRate
+            };
+        } else {
+            videoConstraints.frameRate = constraints.maxFrameRate;
+        }
+
+        await source.getStream().getVideoTracks()[0]?.applyConstraints(constraints);
+        this.currentConstrints = constraints;
+
+        /* TODO: Bandwidth update? */
+    }
+
     stopBroadcasting(skipRtcStop?: boolean, stopState?: LocalVideoBroadcastState) {
         if(this.state.state === "stopped" && (!stopState || _.isEqual(stopState, this.state))) {
             return;
@@ -241,6 +312,10 @@ class LocalRtpVideoBroadcast implements LocalVideoBroadcast {
             }
         })();
     }
+
+    getConstraints(): BroadcastConstraints | undefined {
+        return this.currentConstrints;
+    }
 }
 
 export class RtpVideoConnection implements VideoConnection {

shared/js/connection/rtc/video/VideoClient.ts

@@ -78,8 +78,8 @@ export class RtpVideoClient implements VideoClient {
                 throw tr("failed to receive stream");
             }
         }).catch(error => {
-            this.updateBroadcastState(broadcastType);
             this.joinedStates[broadcastType] = false;
+            this.updateBroadcastState(broadcastType);
             logError(LogCategory.VIDEO, tr("Failed to join video broadcast: %o"), error);
             throw tr("failed to join broadcast");
         });

shared/js/events/ClientGlobalControlHandler.ts

@@ -17,8 +17,7 @@ import {spawnModalCssVariableEditor} from "tc-shared/ui/modal/css-editor/Control
 import {server_connections} from "tc-shared/ConnectionManager";
 import {spawnAbout} from "tc-shared/ui/modal/ModalAbout";
 import {spawnVideoSourceSelectModal} from "tc-shared/ui/modal/video-source/Controller";
-import {LogCategory, logError} from "tc-shared/log";
+import {LogCategory, logError, logWarn} from "tc-shared/log";
-import {getVideoDriver} from "tc-shared/video/VideoSource";
 import {spawnEchoTestModal} from "tc-shared/ui/modal/echo-test/Controller";
 
 /*
@@ -193,14 +192,15 @@ export function initialize(event_registry: Registry<ClientGlobalControlEvents>)
                 return;
             }
 
-            spawnVideoSourceSelectModal(event.broadcastType, event.quickSelect ? "quick" : "default", event.defaultDevice).then(async source => {
+            spawnVideoSourceSelectModal(event.broadcastType, event.quickSelect ? { mode: "select-quick", defaultDevice: event.defaultDevice } : { mode: "select-default", defaultDevice: event.defaultDevice })
+                .then(async ({ source, constraints }) => {
                 if(!source) { return; }
 
                 try {
                     const broadcast = connection.getServerConnection().getVideoConnection().getLocalBroadcast(event.broadcastType);
                     if(broadcast.getState().state === "initializing" || broadcast.getState().state === "broadcasting") {
                         console.error("Change source");
-                        broadcast.changeSource(source).catch(error => {
+                        broadcast.changeSource(source, constraints).catch(error => {
                             logError(LogCategory.VIDEO, tr("Failed to change broadcast source: %o"), event.broadcastType, error);
                             if(typeof error !== "string") {
                                 error = tr("lookup the console for detail");
@@ -214,7 +214,7 @@ export function initialize(event_registry: Registry<ClientGlobalControlEvents>)
                         });
                     } else {
                         console.error("Start broadcast");
-                        broadcast.startBroadcasting(source).catch(error => {
+                        broadcast.startBroadcasting(source, constraints).catch(error => {
                             logError(LogCategory.VIDEO, tr("Failed to start %s broadcasting: %o"), event.broadcastType, error);
                             if(typeof error !== "string") {
                                 error = tr("lookup the console for detail");
@@ -237,4 +237,35 @@ export function initialize(event_registry: Registry<ClientGlobalControlEvents>)
             broadcast.stopBroadcasting();
         }
     });
+
+    event_registry.on("action_edit_video_broadcasting", event => {
+        const connection = event.connection;
+        if(!connection.connected) {
+            createErrorModal(tr("You're not connected"), tr("You're not connected to any server!")).open();
+            return;
+        }
+
+        const broadcast = connection.getServerConnection().getVideoConnection().getLocalBroadcast(event.broadcastType);
+        if(!broadcast || (broadcast.getState().state !== "broadcasting" && broadcast.getState().state !== "initializing")) {
+            createErrorModal(tr("You're not broadcasting"), tr("You're not broadcasting any video!")).open();
+            return;
+        }
+
+        spawnVideoSourceSelectModal(event.broadcastType, { mode: "edit", source: broadcast.getSource(), broadcastConstraints: Object.assign({}, broadcast.getConstraints()) })
+        .then(async ({ source, constraints }) => {
+            if (!source) {
+                return;
+            }
+
+            if(broadcast.getState().state !== "broadcasting" && broadcast.getState().state !== "initializing") {
+                createErrorModal(tr("Video broadcast has ended"), tr("The video broadcast has ended.\nUpdate failed.")).open();
+                return;
+            }
+
+            await broadcast.changeSource(source, constraints);
+        }).catch(error => {
+            logWarn(LogCategory.VIDEO, tr("Failed to edit video broadcast: %o"), error);
+            createErrorModal(tr("Broadcast update failed"), tr("We failed to update the current video broadcast settings.\nThe old settings will be used.")).open();
+        });
+    });
 }

shared/js/media/Video.ts

@@ -4,13 +4,13 @@ import {
     VideoDriver,
     VideoDriverEvents,
     VideoPermissionStatus,
-    VideoSource
+    VideoSource, VideoSourceCapabilities, VideoSourceInitialSettings
 } from "tc-shared/video/VideoSource";
 import {Registry} from "tc-shared/events";
 import {MediaStreamRequestResult} from "tc-shared/voice/RecorderBase";
 import {LogCategory, logDebug, logError, logWarn} from "tc-shared/log";
 import {queryMediaPermissions, requestMediaStream, stopMediaStream} from "tc-shared/media/Stream";
-import { tr } from "tc-shared/i18n/localize";
+import {tr} from "tc-shared/i18n/localize";
 
 declare global {
     interface MediaDevices {
@@ -225,7 +225,9 @@ export class WebVideoDriver implements VideoDriver {
         try {
             const source = await navigator.mediaDevices.getDisplayMedia({ audio: false, video: true });
             const videoTrack = source.getVideoTracks()[0];
-            if(!videoTrack) { throw tr("missing video track"); }
+            if(!videoTrack) {
+                throw tr("missing video track");
+            }
 
             logDebug(LogCategory.VIDEO, tr("Display media received with settings: %o"), videoTrack.getSettings());
             return new WebVideoSource(videoTrack.getSettings().deviceId, tr("Screen"), source);
@@ -248,10 +250,19 @@ export class WebVideoSource implements VideoSource {
     private readonly stream: MediaStream;
     private referenceCount = 1;
 
+    private initialSettings: VideoSourceInitialSettings;
+
     constructor(deviceId: string, displayName: string, stream: MediaStream) {
         this.deviceId = deviceId;
         this.displayName = displayName;
         this.stream = stream;
+
+        const settings = stream.getVideoTracks()[0].getSettings();
+        this.initialSettings = {
+            frameRate: settings.frameRate,
+            height: settings.height,
+            width: settings.width
+        };
     }
 
     destroy() {
@@ -270,6 +281,26 @@ export class WebVideoSource implements VideoSource {
         return this.stream;
     }
 
+    getInitialSettings(): VideoSourceInitialSettings {
+        return this.initialSettings;
+    }
+
+    getCapabilities(): VideoSourceCapabilities {
+        const videoTrack = this.stream.getVideoTracks()[0];
+        const capabilities = "getCapabilities" in videoTrack ? videoTrack.getCapabilities() : undefined;
+
+        return {
+            minWidth: capabilities?.width?.min || 1,
+            maxWidth: capabilities?.width?.max || this.initialSettings.width,
+
+            minHeight: capabilities?.height?.min || 1,
+            maxHeight: capabilities?.height?.max || this.initialSettings.height,
+
+            minFrameRate: capabilities?.frameRate?.min || 1,
+            maxFrameRate: capabilities?.frameRate?.max || this.initialSettings.frameRate
+        };
+    }
+
     deref() {
         this.referenceCount -= 1;
 

shared/js/settings.ts

@@ -541,6 +541,20 @@ export class Settings extends StaticSettings {
         valueType: "number",
     };
 
+    static readonly KEY_VIDEO_DEFAULT_MAX_WIDTH: ValuedSettingsKey<number> = {
+        key: 'video_default_max_width',
+        defaultValue: 1280,
+        description: "The default maximal width of the video being crated.",
+        valueType: "number",
+    };
+
+    static readonly KEY_VIDEO_DEFAULT_MAX_HEIGHT: ValuedSettingsKey<number> = {
+        key: 'video_default_max_height',
+        defaultValue: 720,
+        description: "The default maximal height of the video being crated.",
+        valueType: "number",
+    };
+
     static readonly FN_LOG_ENABLED: (category: string) => SettingsKey<boolean> = category => {
         return {
             key: "log." + category.toLowerCase() + ".enabled",

shared/js/ui/frames/control-bar/Controller.ts

@@ -418,6 +418,16 @@ export function initializeControlBarController(events: Registry<ControlBarEvents
             createErrorModal(tr("Missing connection handler"), tr("Cannot start video broadcasting with a missing connection handler")).open();
         }
     });
+    events.on("action_manage_video", event => {
+        if(infoHandler.getCurrentHandler()) {
+            global_client_actions.fire("action_edit_video_broadcasting", {
+                connection: infoHandler.getCurrentHandler(),
+                broadcastType: event.broadcastType
+            });
+        } else {
+            createErrorModal(tr("Missing connection handler"), tr("Cannot start video broadcasting with a missing connection handler")).open();
+        }
+    });
 
     return infoHandler;
 }

shared/js/ui/frames/control-bar/Renderer.tsx

@@ -294,7 +294,7 @@ const VideoButton = (props: { type: VideoBroadcastType }) => {
                 <Button switched={false} colorTheme={"red"} autoSwitch={false} iconNormal={icon}
                             onToggle={() => events.fire("action_toggle_video", {enable: false, broadcastType: props.type})}
                             tooltip={tooltip} key={"disable"}>
-                    {/* <DropdownEntry icon={icon} text={dropdownTextManage} onClick={() => events.fire("action_manage_video", { broadcastType: props.type })} /> TODO! */}
+                    <DropdownEntry icon={icon} text={dropdownTextManage} onClick={() => events.fire("action_manage_video", { broadcastType: props.type })} />
                     <DropdownEntry icon={icon} text={dropdownTextStop} onClick={() => events.fire("action_toggle_video", {enable: false, broadcastType: props.type})} />
                     {props.type === "camera" ? <VideoDeviceList key={"list"} /> : null}
                 </Button>

shared/js/ui/modal/video-source/Controller.tsx

@@ -3,56 +3,74 @@ import {spawnReactModal} from "tc-shared/ui/react-elements/Modal";
 import {ModalVideoSourceEvents} from "tc-shared/ui/modal/video-source/Definitions";
 import {ModalVideoSource} from "tc-shared/ui/modal/video-source/Renderer";
 import {getVideoDriver, VideoPermissionStatus, VideoSource} from "tc-shared/video/VideoSource";
-import {LogCategory, logError} from "tc-shared/log";
+import {LogCategory, logError, logWarn} from "tc-shared/log";
-import {VideoBroadcastType} from "tc-shared/connection/VideoConnection";
+import {BroadcastConstraints, VideoBroadcastType} from "tc-shared/connection/VideoConnection";
+import {Settings, settings} from "tc-shared/settings";
+import {tr} from "tc-shared/i18n/localize";
 
-type SourceConstraints = { width?: number, height?: number, frameRate?: number };
+export type VideoSourceModalAction = {
+    mode: "select-quick",
+    defaultDevice?: string
+} | {
+    mode: "select-default",
+    defaultDevice?: string
+} | {
+    mode: "new"
+} | {
+    mode: "edit",
+    source: VideoSource,
+    broadcastConstraints: BroadcastConstraints
+};
 
 /**
  * @param type The video type which should be prompted
- * @param selectMode
+ * @param mode
- * @param defaultDeviceId
  */
-export async function spawnVideoSourceSelectModal(type: VideoBroadcastType, selectMode: "quick" | "default" | "none", defaultDeviceId?: string) : Promise<VideoSource> {
+export async function spawnVideoSourceSelectModal(type: VideoBroadcastType, mode: VideoSourceModalAction) : Promise<{ source: VideoSource | undefined, constraints: BroadcastConstraints | undefined }> {
     const controller = new VideoSourceController(type);
 
-    let defaultSelectSource = selectMode === "default";
+    let defaultSelectDevice: string | true;
-    if(selectMode === "quick") {
+    if(mode.mode === "select-quick") {
         /* We need the modal itself for the native client in order to present the window selector */
         if(type === "camera" || __build.target === "web") {
             /* Try to get the default device. If we succeeded directly return that */
-            if(await controller.selectSource(defaultDeviceId)) {
+            if(await controller.selectSource(mode.defaultDevice)) {
-                const source = controller.getCurrentSource()?.ref();
+                /* select succeeded */
+                const resultSource = controller.getCurrentSource()?.ref();
+                const resultConstraints = controller.getBroadcastConstraints();
                 controller.destroy();
-
+                return {
-                return source;
+                    source: resultSource,
+                    constraints: resultConstraints
+                };
+            } else {
+                /* Select failed. We'll open the modal and show the error. */
             }
         } else {
-            defaultSelectSource = true;
+            defaultSelectDevice = mode.defaultDevice || true;
         }
+    } else if(mode.mode === "select-default") {
+        defaultSelectDevice = mode.defaultDevice || true;
+    } else if(mode.mode === "edit") {
+        await controller.useSettings(mode.source, mode.broadcastConstraints);
     }
 
-    const modal = spawnReactModal(ModalVideoSource, controller.events, type);
+    const modal = spawnReactModal(ModalVideoSource, controller.events, type, mode.mode === "edit");
     controller.events.on(["action_start", "action_cancel"], () => modal.destroy());
 
     modal.show().then(() => {
-        if(defaultSelectSource) {
+        if(defaultSelectDevice) {
             if(type === "screen" && getVideoDriver().screenQueryAvailable()) {
                 controller.events.fire_react("action_toggle_screen_capture_device_select", { shown: true });
             } else {
-                controller.selectSource(defaultDeviceId);
+                controller.selectSource(defaultSelectDevice === true ? undefined : defaultSelectDevice);
             }
         }
     });
 
-    let refSource: { source: VideoSource } = { source: undefined };
-    controller.events.on("action_start", () => {
-        refSource.source?.deref();
-        refSource.source = controller.getCurrentSource()?.ref();
-    });
-
     await new Promise(resolve => {
-        if(defaultSelectSource && selectMode === "quick") {
+        if(mode.mode === "select-quick" && __build.target !== "web") {
+            /* We need the modal event for quick select */
             const callbackRemove = controller.events.on("notify_video_preview", event => {
                 if(event.status.status === "error") {
                     callbackRemove();
@@ -60,8 +78,6 @@ export async function spawnVideoSourceSelectModal(type: VideoBroadcastType, sele
 
                 if(event.status.status === "preview") {
                     /* we've successfully selected something */
-                    refSource.source = controller.getCurrentSource()?.ref();
-                    modal.hide();
                     modal.destroy();
                 }
             });
@@ -70,8 +86,96 @@ export async function spawnVideoSourceSelectModal(type: VideoBroadcastType, sele
         modal.events.one(["destroy", "close"], resolve);
     });
 
+    const resultSource = controller.getCurrentSource()?.ref();
+    const resultConstraints = controller.getBroadcastConstraints();
     controller.destroy();
-    return refSource.source;
+    return {
+        source: resultSource,
+        constraints: resultConstraints
+    };
+}
+
+function updateBroadcastConstraintsFromSource(source: VideoSource, constraints: BroadcastConstraints) {
+    const videoTrack = source.getStream().getVideoTracks()[0];
+    const trackSettings = videoTrack.getSettings();
+
+    constraints.width = trackSettings.width;
+    constraints.height = trackSettings.height;
+    constraints.maxFrameRate = trackSettings.frameRate;
+}
+
+async function generateAndApplyDefaultConstraints(source: VideoSource) : Promise<BroadcastConstraints> {
+    const videoTrack = source.getStream().getVideoTracks()[0];
+
+    let maxHeight = settings.static_global(Settings.KEY_VIDEO_DEFAULT_MAX_HEIGHT);
+    let maxWidth = settings.static_global(Settings.KEY_VIDEO_DEFAULT_MAX_WIDTH);
+
+    const trackSettings = videoTrack.getSettings();
+    const capabilities = source.getCapabilities();
+
+    maxHeight = Math.min(maxHeight, capabilities.maxHeight);
+    maxWidth = Math.min(maxWidth, capabilities.maxWidth);
+
+    const broadcastConstraints: BroadcastConstraints = {} as any;
+    {
+        let ratio = 1;
+
+        if(trackSettings.height > maxHeight) {
+            ratio = Math.min(maxHeight / trackSettings.height, ratio);
+        }
+
+        if(trackSettings.width > maxWidth) {
+            ratio = Math.min(maxWidth / trackSettings.width, ratio);
+        }
+
+        if(ratio !== 1) {
+            broadcastConstraints.width = Math.ceil(ratio * trackSettings.width);
+            broadcastConstraints.height = Math.ceil(ratio * trackSettings.height);
+        } else {
+            broadcastConstraints.width = trackSettings.width;
+            broadcastConstraints.height = trackSettings.height;
+        }
+    }
+
+    broadcastConstraints.dynamicQuality = true;
+    broadcastConstraints.dynamicFrameRate = true;
+    broadcastConstraints.maxBandwidth = 10_000_000;
+
+    try {
+        await applyBroadcastConstraints(source, broadcastConstraints);
+    } catch (error) {
+        logWarn(LogCategory.VIDEO, tr("Failed to apply initial default broadcast constraints: %o"), error);
+    }
+
+    updateBroadcastConstraintsFromSource(source, broadcastConstraints);
+
+    return broadcastConstraints;
+}
+
+/* May throws an overconstraint error */
+async function applyBroadcastConstraints(source: VideoSource, constraints: BroadcastConstraints) {
+    const videoTrack = source.getStream().getVideoTracks()[0];
+    if(!videoTrack) { return; }
+
+    await videoTrack.applyConstraints({
+        frameRate: constraints.dynamicFrameRate ? {
+            min: 1,
+            max: constraints.maxFrameRate,
+            ideal: constraints.maxFrameRate
+        } : constraints.maxFrameRate,
+
+        width: constraints.dynamicQuality ? {
+            min: 1,
+            max: constraints.width,
+            ideal: constraints.width
+        } : constraints.width,
+
+        height: constraints.dynamicQuality ? {
+            min: 1,
+            max: constraints.height,
+            ideal: constraints.height
+        } : constraints.height
+    });
 }
 
 class VideoSourceController {
@@ -79,7 +183,7 @@ class VideoSourceController {
     private readonly type: VideoBroadcastType;
 
     private currentSource: VideoSource | string;
-    private currentConstraints: SourceConstraints;
+    private currentConstraints: BroadcastConstraints;
 
     /* preselected current source id */
     private currentSourceId: string;
@@ -177,24 +281,13 @@ class VideoSourceController {
             }));
         }
 
-        const applyConstraints = async () => {
-            if(typeof this.currentSource === "object") {
-                const videoTrack = this.currentSource.getStream().getVideoTracks()[0];
-                if(!videoTrack) { return; }
-
-                await videoTrack.applyConstraints(this.currentConstraints);
-            }
-        };
-
         this.events.on("action_setting_dimension", event => {
             this.currentConstraints.height = event.height;
             this.currentConstraints.width = event.width;
-            applyConstraints().then(undefined);
         });
 
         this.events.on("action_setting_framerate", event => {
-            this.currentConstraints.frameRate = event.frameRate;
+            this.currentConstraints.maxFrameRate = event.frameRate;
-            applyConstraints().then(undefined);
         });
     }
 
@@ -208,12 +301,27 @@ class VideoSourceController {
         this.events.destroy();
     }
 
-    setCurrentSource(source: VideoSource | string | undefined) {
+    async setCurrentSource(source: VideoSource | string | undefined) {
         if(typeof this.currentSource === "object") {
             this.currentSource.deref();
         }
 
-        this.currentConstraints = {};
+        if(typeof source === "object") {
+            if(this.currentConstraints) {
+                try {
+                    /* TODO: Automatically scale down resolution if new one isn't capable of supplying our current resolution */
+                    await applyBroadcastConstraints(source, this.currentConstraints);
+                } catch (error) {
+                    logWarn(LogCategory.VIDEO, tr("Failed to apply broadcast constraints to new source: %o"), error);
+                    this.currentConstraints = undefined;
+                }
+            }
+
+            if(!this.currentConstraints) {
+                this.currentConstraints = await generateAndApplyDefaultConstraints(source);
+            }
+        }
+
         this.currentSource = source;
         this.notifyVideoPreview();
         this.notifyStartButton();
@@ -222,6 +330,20 @@ class VideoSourceController {
         this.notifySettingFramerate();
     }
 
+    async useSettings(source: VideoSource, constraints: BroadcastConstraints) {
+        if(typeof this.currentSource === "object") {
+            this.currentSource.deref();
+        }
+
+        this.currentSource = source.ref();
+        this.currentConstraints = constraints;
+        this.notifyVideoPreview();
+        this.notifyStartButton();
+        this.notifyCurrentSource();
+        this.notifySettingDimension();
+        this.notifySettingFramerate();
+    }
+
     async selectSource(sourceId: string) : Promise<boolean> {
         const driver = getVideoDriver();
 
@@ -244,17 +366,17 @@ class VideoSourceController {
 
         try {
             const stream = await streamPromise;
-            this.setCurrentSource(stream);
+            await this.setCurrentSource(stream);
             this.fallbackCurrentSourceName = stream?.getName() || tr("No stream");
 
             return !!stream;
         } catch (error) {
             this.fallbackCurrentSourceName = tr("failed to attach to device");
             if(typeof error === "string") {
-                this.setCurrentSource(error);
+                await this.setCurrentSource(error);
             } else {
                 logError(LogCategory.GENERAL, tr("Failed to open capture device %s: %o"), sourceId, error);
-                this.setCurrentSource(tr("Failed to open capture device (Lookup the console)"));
+                await this.setCurrentSource(tr("Failed to open capture device (Lookup the console)"));
             }
 
             return false;
@@ -265,6 +387,10 @@ class VideoSourceController {
         return typeof this.currentSource === "object" ? this.currentSource : undefined;
     }
 
+    getBroadcastConstraints() : BroadcastConstraints {
+        return this.currentConstraints;
+    }
+
     private notifyStartButton() {
         this.events.fire_react("notify_start_button", { enabled: typeof this.currentSource === "object" })
     }
@@ -291,7 +417,7 @@ class VideoSourceController {
         });
     }
 
-    private notifyScreenCaptureDevices(){
+    private notifyScreenCaptureDevices() {
         const driver = getVideoDriver();
         driver.queryScreenCaptureDevices().then(devices => {
             this.events.fire_react("notify_screen_capture_devices", { devices: { status: "success", devices: devices }});
@@ -305,7 +431,7 @@ class VideoSourceController {
         })
     }
 
-    private notifyVideoPreview(){
+    private notifyVideoPreview() {
         const driver = getVideoDriver();
         switch (driver.getPermissionStatus()) {
             case VideoPermissionStatus.SystemDenied:
@@ -333,7 +459,7 @@ class VideoSourceController {
         }
     };
 
-    private notifyCurrentSource(){
+    private notifyCurrentSource() {
         if(typeof this.currentSource === "object") {
             this.events.fire_react("notify_source", {
                 state: {
@@ -358,25 +484,25 @@ class VideoSourceController {
         }
     }
 
-    private notifySettingDimension(){
+    private notifySettingDimension() {
         if(typeof this.currentSource === "object") {
-            const videoTrack = this.currentSource.getStream().getVideoTracks()[0];
+            const initialSettings = this.currentSource.getInitialSettings();
-            const settings = videoTrack.getSettings();
+            const capabilities = this.currentSource.getCapabilities();
-            const capabilities = "getCapabilities" in videoTrack ? videoTrack.getCapabilities() : undefined;
+            const constraints = this.currentConstraints;
 
             this.events.fire_react("notify_setting_dimension", {
                 setting: {
-                    minWidth: capabilities?.width ? capabilities.width.min : 1,
+                    minWidth: capabilities.minWidth,
-                    maxWidth: capabilities?.width ? capabilities.width.max : settings.width,
+                    maxWidth: capabilities.maxWidth,
 
-                    minHeight: capabilities?.height ? capabilities.height.min : 1,
+                    minHeight: capabilities.minHeight,
-                    maxHeight: capabilities?.height ? capabilities.height.max : settings.height,
+                    maxHeight: capabilities.maxHeight,
 
-                    originalWidth: settings.width,
+                    originalWidth: initialSettings.width,
-                    originalHeight: settings.height,
+                    originalHeight: initialSettings.height,
 
-                    currentWidth: settings.width,
+                    currentWidth: constraints.width,
-                    currentHeight: settings.height
+                    currentHeight: constraints.height
                 }
             });
         } else {
@@ -386,16 +512,16 @@ class VideoSourceController {
 
     notifySettingFramerate() {
         if(typeof this.currentSource === "object") {
-            const videoTrack = this.currentSource.getStream().getVideoTracks()[0];
+            const initialSettings = this.currentSource.getInitialSettings();
-            const settings = videoTrack.getSettings();
+            const capabilities = this.currentSource.getCapabilities();
-            const capabilities = "getCapabilities" in videoTrack ? videoTrack.getCapabilities() : undefined;
 
             const round = (value: number) => Math.round(value * 100) / 100;
             this.events.fire_react("notify_settings_framerate", {
                 frameRate: {
-                    min: round(capabilities?.frameRate ? capabilities.frameRate.min : 1),
+                    min: round(capabilities.minFrameRate),
-                    max: round(capabilities?.frameRate ? capabilities.frameRate.max : settings.frameRate),
+                    max: round(capabilities.maxFrameRate),
-                    original: round(settings.frameRate)
+                    original: round(initialSettings.frameRate),
+                    current: round(this.currentConstraints.maxFrameRate)
                 }
             });
         } else {

shared/js/ui/modal/video-source/Definitions.ts

@@ -48,6 +48,7 @@ export type SettingFrameRate = {
     min: number,
     max: number,
     original: number,
+    current: number
 };
 
 export interface ModalVideoSourceEvents {

shared/js/ui/modal/video-source/Renderer.tsx

@@ -233,7 +233,7 @@ const VideoPreview = () => {
     );
 }
 
-const ButtonStart = () => {
+const ButtonStart = (props: { editMode: boolean }) => {
     const events = useContext(ModalEvents);
     const [ enabled, setEnabled ] = useState(() => {
         events.fire("query_start_button");
@@ -248,7 +248,7 @@ const ButtonStart = () => {
             disabled={!enabled}
             onClick={() => enabled && events.fire("action_start")}
         >
-            <Translatable>Start</Translatable>
+            {props.editMode ? <Translatable key={"edit"}>Apply Changed</Translatable> : <Translatable key={"start"}>Start</Translatable>}
         </Button>
     );
 }
@@ -317,7 +317,7 @@ const SettingDimension = () => {
             setHeight(event.setting.currentHeight);
             refSliderWidth.current?.setState({ value: event.setting.currentWidth });
             refSliderHeight.current?.setState({ value: event.setting.currentHeight });
-            setSelectValue("original");
+            setSelectValue("current");
         } else {
             setSettings(undefined);
             setSelectValue("no-source");
@@ -419,6 +419,7 @@ const SettingDimension = () => {
                         <option value={dimensionId} key={dimensionId}>{DimensionPresets[dimensionId].name + " (" + boundsString(dimensionId as any) + ")"}</option>
                     )}
                     <option value={"original"} key={"original"}>{tr("Default")} ({(settings ? settings.originalWidth + "x" + settings.originalHeight : "0x0")})</option>
+                    <option value={"current"} key={"current"} style={{ display: "none" }}>{width + "x" + height}</option>
                     <option value={"custom"} key={"custom"} style={{ display: advanced ? undefined : "none" }}>{tr("Custom")}</option>
                     <option value={"no-source"} key={"no-source"} style={{ display: "none" }}>{tr("No source selected")}</option>
                 </Select>
@@ -486,7 +487,7 @@ const SettingFramerate = () => {
         setFrameRate(event.frameRate);
         setCurrentRate(event.frameRate ? event.frameRate.original : 1);
         if(event.frameRate) {
-            setSelectedValue(event.frameRate.original.toString());
+            setSelectedValue(event.frameRate.current.toString());
         } else {
             setSelectedValue("no-source");
         }
@@ -497,6 +498,9 @@ const SettingFramerate = () => {
         if(Object.keys(FrameRates).findIndex(key => FrameRates[key] === frameRate.original) === -1) {
             FrameRates[frameRate.original.toString()] = frameRate.original;
         }
+        if(Object.keys(FrameRates).findIndex(key => FrameRates[key] === frameRate.current) === -1) {
+            FrameRates[frameRate.current.toString()] = frameRate.current;
+        }
     }
 
     return (
@@ -758,12 +762,14 @@ const ScreenCaptureDeviceSelect = React.memo(() => {
 export class ModalVideoSource extends InternalModal {
     protected readonly events: Registry<ModalVideoSourceEvents>;
     private readonly sourceType: VideoBroadcastType;
+    private readonly editMode: boolean;
 
-    constructor(events: Registry<ModalVideoSourceEvents>, type: VideoBroadcastType) {
+    constructor(events: Registry<ModalVideoSourceEvents>, type: VideoBroadcastType, editMode: boolean) {
         super();
 
         this.sourceType = type;
         this.events = events;
+        this.editMode = editMode;
     }
 
     renderBody(): React.ReactElement {
@@ -793,7 +799,7 @@ export class ModalVideoSource extends InternalModal {
                         <Button type={"small"} color={"red"} onClick={() => this.events.fire("action_cancel")}>
                             <Translatable>Cancel</Translatable>
                         </Button>
-                        <ButtonStart />
+                        <ButtonStart editMode={this.editMode} />
                     </div>
                 </div>
                 <ScreenCaptureDeviceSelect />

shared/js/video/VideoSource.ts

@@ -1,11 +1,30 @@
 import {Registry} from "tc-shared/events";
 import { tr } from "tc-shared/i18n/localize";
 
+export interface VideoSourceCapabilities {
+    minWidth: number,
+    maxWidth: number,
+
+    minHeight: number,
+    maxHeight: number,
+
+    minFrameRate: number,
+    maxFrameRate: number
+}
+
+export interface VideoSourceInitialSettings {
+    width: number,
+    height: number,
+    frameRate: number
+}
+
 export interface VideoSource {
     getId() : string;
     getName() : string;
 
     getStream() : MediaStream;
+    getCapabilities() : VideoSourceCapabilities;
+    getInitialSettings() : VideoSourceInitialSettings;
 
     /** Add a new reference to this stream */
     ref() : this;